A bag or pouch inside a plant or animal that typically contains a fluid.
(games) A sacrifice.
Kasparov's queen sac early in the game gained him a positional advantage against Kramnik.
(games) To sacrifice.
I kept saccing monsters at the altar until I was rewarded with a new weapon.
The privilege, formerly enjoyed by the lord of a manor, of holding courts, trying causes, and imposing fines.